A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6320-00-394-7903
NSN 5999-01-563-8825
NSN 5930-00-866-0230
NSN 6145-00-375-5224
NSN 5950-01-430-3245
NSN 6130-01-463-8672
NSN 5905-01-552-5038
NSN 6685-00-186-0190
NSN 5935-00-429-1032
NSN 5895-01-319-1954
NSN 4140-00-804-5667
NSN 5996-01-426-8531